Our results showed that the tobacco WT plants displayed
reduced biomass during N-limited conditions that produced a
decrease in all of the different N forms and the generation of
ROS that induced a damaging oxidative stress. In contrast, under
N-deficiency transgenic PSARK::IPT did not produce high ROS concentrations
and maintained biomass and RGR values similar to the
control plants. Our results suggest that the expression of PSARK::IPT
in plants could improve N use efficiency, favouring a reduction in
the application of nitrogenous fertilizers, without losses in crop
productivity.